Surveillance on drinking-water-born endemic fluorosis in China, 2013
10.3760/cma.j.issn.0254-6450.2016.06.015
- VernacularTitle:中国2013年度饮水型地方性氟中毒监测
- Author:
Lijun ZHAO
1
;
Junrui PEI
;
Wei ZHANG
;
Wei WANG
;
Guangqian YU
;
Dianjun SUN
;
Yanhui GAO
Author Information
1. 150081,哈尔滨医科大学中国疾病预防控制中心地方病控制中心地氟病防治研究所国家卫生和计划生育委员会病因流行病学重点实验室(23618504)黑龙江省普通高校病因流行病学重点实验室
- Keywords:
Endemic fluorosis;
Drinking water;
Dental fluorosis;
Monitoring;
Water-improved project
- From:
Chinese Journal of Epidemiology
2016;37(6):816-820
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the prevalence of fluorosis and related control measures on drinking water type of endemic fluorosis in China.Methods According to the national program"Surveillance Scheme of Drinking-Water-Borne Endemic Fluorosis",136 counties were selected in 29 provinces,autonomous regions and municipalities.Three epidemic villages were randomly selected as fixed monitoring sites in each county.Dental fluorosis of all the children aged 8-12 living in the villages under the monitoring program,was identified under the ariteria from "Diagnosis of dental fluorosis"(WS/T 208-2011).Operating conditions and contents of fluoride in all the'water-improved projects' were investigated.Contents of fluoride in drinking water were tested in villages without the 'water-improved projects'."Standard Test Method for Drinking Water" (GB/T 5750.5-2006) was used to detect the water fluoride.Results The overall prevalence of dental fluorosis among children aged 8-12 in all the villages under monitor program,was 28.58％ (7 950/27 817),with the dental fluorosis index (DFI) as 0.58.Among them,the prevalence was 22.28％ (3 917/17 583) and DFI was 0.44 in the' water-improved projects' villages that under normal operation and with qualified fluoride contents.The prevalence appeared as 38.74％ (1 926/4 971) with DFI as 0.84 in those villages with 'water-improved projects' but mal-operated or with excessive fluoride.The prevalence was 40.03％ (2 107/5 263),and DFI was 0.81 in those villages without'water-improved projects'.The prevalence rates of dental fluorosis in children from the three types of endemic areas were significantly different.For 'water-improved projects',the normal opration rate was 93.77％ (286/305) and the qualification rate of fluoride content was 76.77％ (228/297).Conclusions Dental fluorosis in children living in the drinking-water-born endemic fluorosis areas was on the edge of epidemics in China.Effective improvement on the quality of drinking water can significantly reduce the severity of dental fluorosis in children.The rate of proper operation on 'water-improved projects' was near to 95％ in the endemic area.However,rate that met the criteria on qualified fluoride contents of these projects was still below 80％.
